(19)

(11)

EP 4 457 426 A1

(12)

(43) Date of publication: 06.11.2024 Bulletin 2024/45 (21) Application number: 21970178.6 (22) Date of filing: 30.12.2021

(51) International Patent Classification (IPC):  E21B 44/00(2006.01) E21B 41/00(2006.01) E21B 44/02(2006.01) E21B 7/06(2006.01) (52) Cooperative Patent Classification (CPC): E21B 2200/20; E21B 47/022; E21B 7/04; G06N 20/00 (86) International application number: PCT/US2021/065603 (87) International publication number: WO 2023/129156 (06.07.2023 Gazette 2023/27)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 29.12.2021 US 202117564578 (71) Applicant: Halliburton Energy Services Inc. Houston, Texas 77032-3219 (US)	(72) Inventors: PHO, Vy Houston, Texas 77032 (US) DEMIRER, Nazli Houston, Texas 77032 (US) ZALLUHOGLU, Umut Houston, Texas 77032 (US) DARBE, Robert, P. Houston, Texas 77032 (US) (74) Representative: Hoffmann Eitle  Patent- und Rechtsanwälte PartmbB Arabellastraße 30 81925 München 81925 München (DE)